Nodejs Hour Get removeHours(h)

Method Source Code

/**//from   w  w w.  ja v a2s.  co  m
 * Remove hours to date
 *
 * @method removeHours
 * @param {Number} h How much hours to remove
 * @return {Object} The Date instance
 */
Date.prototype.removeHours = function (h) {
  this.setHours(this.getHours()-h);
  return this;
};

Related

1. getHoursTwoDigits()

   Date.prototype.getHoursTwoDigits = function()
       var retval = this.getHours();
       if (retval < 10)
           return ("0" + retval.toString());
       else
           return retval.toString();
   };
   

2. getSimpleHoursgetSimpleHours()

   Date.prototype.getSimpleHours = function getSimpleHours() {
     var ss_ofs = this.getDaySimpleSeconds();
     var sm_ofs = Math.floor(ss_ofs/100);
     var sh_ofs = Math.floor(sm_ofs/100);
     return sh_ofs;
   

3. hourAgo()

   Date.prototype.hourAgo = function () {
     this.setHours(this.getHours() - 1);
     return this;
   

4. millisPerHour()

   Date.millisPerHour = function(){ return 3600 * 1000 };
   Date.millisPerDay = function(){ return 24 * Date.millisPerHour() };
   Date.millisPerYear = function(){ return Date.millisPerDay() * 365 };
   Date.yearsFromNow = function(years){ return Date.fromMillis(Date.clone().getTime() + Date.millisPerYear() * years) };
   Date.hoursAgo = function(hours){ return Date.fromMillis(Date.clone().getTime() - Date.millisPerHour() * hours) };
   Date.daysAgo = function(days){ return Date.fromMillis(Date.clone().getTime() - Date.millisPerDay() * days) };
   Date.fromMillis = function(millis)
     return new Date(millis);
   ...
   

5. minusHours(hrs)

   Date.prototype.minusHours = function(hrs) {
       this.setHours(this.getHours() - hrs);
       return this;
   };
   

6. roundToHour()

   Date.prototype.roundToHour = function() {
       if (this.getMinutes() == 0)
           return; 
       if (this.getHours() < 23)
           this.setHours(this.getHours() + 1);
       this.setMinutes(0);
   };